Focus on alternate traffic sources:
The first rule of getting traffic is to find all alternatives. You need to create social media profiles (Facebook, Twitter, Reddit and Pinterest have more conversions for many niches). Apart from them get backlinks (and perhaps traffic) from parasites.
SEO:
Both on-site and off-site SEO are important. So, you need to optimize your content while not effecting UX. Build backlinks from as many authoritative sources as you can, and as fast as you can (But avoid spam links).
Wordpress and custom domain:
Switch to wordpress as soon as you hit 1k visitors per day. This may seem too early but trust me, wordpress offers a lot more than blogspot. And find a relevant custom domain as soon as you can. Choose a short domain without much kw. As your site grows, your domain name becomes a keyword itself. So, choose something unique.
Quora:
As you are asking about Quora, remember that it's just like any other parasite. The first rule you should always follow on Quora is not to post links that appear like a promotion. Quora mods are strict and as soon as you get 1k visitors/day, they manually check content and remove your answer. You should find questions that attract a lot of visitors but have less upvotes. A simple Google search can provide you with the regular questions that show up for high traffic keywords. Use clickbait images (this works pretty well on Quora) and write a hook at the beginning of the sentence. Build relation with your audience by responding to comments (this also improves views).